EP0920340B1 - Vorrichtung zur katalytischen zersetzung von wasserstoffperoxyd - Google Patents

Vorrichtung zur katalytischen zersetzung von wasserstoffperoxyd Download PDF

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Publication number
EP0920340B1
EP0920340B1 EP97927109A EP97927109A EP0920340B1 EP 0920340 B1 EP0920340 B1 EP 0920340B1 EP 97927109 A EP97927109 A EP 97927109A EP 97927109 A EP97927109 A EP 97927109A EP 0920340 B1 EP0920340 B1 EP 0920340B1
Authority
EP
European Patent Office
Prior art keywords
shaped body
hydrogen peroxide
container
platinum layer
platinum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97927109A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0920340A1 (de
Inventor
Wolfgang G. K. MÜLLER-LIERHEIM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medical Device Laboratories Europe MDLE GmbH
Original Assignee
Medical Device Laboratories Europe MDLE GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medical Device Laboratories Europe MDLE GmbH filed Critical Medical Device Laboratories Europe MDLE GmbH
Publication of EP0920340A1 publication Critical patent/EP0920340A1/de
Application granted granted Critical
Publication of EP0920340B1 publication Critical patent/EP0920340B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B01J37/0217—Pretreatment of the substrate before coating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
    • A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
    • A61L12/12—Non-macromolecular oxygen-containing compounds, e.g. hydrogen peroxide or ozone
    • A61L12/124—Hydrogen peroxide; Peroxy compounds
    • A61L12/128—Hydrogen peroxide; Peroxy compounds neutralised with catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0203—Preparation of oxygen from inorganic compounds
    • C01B13/0211—Peroxy compounds
    • C01B13/0214—Hydrogen peroxide

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • the catalyst has a catalytically inactive support material on which a catalytic active layer is applied.
  • This layer is made of the known catalyst electrolytically deposited platinum black.
  • the document DE-A-19 522 950 which has not been previously published, describes a device which has a receptacle and a shaped body which has a platinum layer on a TiO x N y base.
  • the object of the invention is to provide a device of the type mentioned in the introduction, which achieves an improved adhesive strength between the platinum layer and the underlay becomes.
  • the platinum layer can be applied as an extremely thin film on the preferably roughened surface of the shaped body made of glass, this film preferably reproducing the surface roughness. In this way, not only is an improved adhesive strength achieved between the catalytically active platinum film and the base, but a reduced mass of platinum metal is required for the layer formation.
  • a sufficiently large catalytically active surface layer on the shaped body is achieved on a small volume of the shaped body or with a reduced area on the shaped body.
  • a preferred layer thickness for the platinum layer is in the range from 0.1 to 1 g / m 2 .
  • the surface roughness is preferred by a mechanical surface treatment, achieved in particular by particle beams.
  • a mechanical surface treatment achieved in particular by particle beams.
  • a sandblasting process for use in roughening the surface the document. It turned out that a glass surface roughened by sandblasting is excellent Adherence to the platinum layer, especially if this is by sputtering is applied. An extremely thin layer can be sputtered on the Roughened glass surface by sandblasting.
  • This platinum layer produced by sputtering is obtained in that a platinum target with high-energy ions of an inert substance, for example argon, neon and the like. is bombarded so that platinum in pure form as a platinum layer on the Deposits molded body.
  • the platinum layer deposited by sputtering has in particular through Sandblasted roughened molded articles have high adhesive strength and can remain in the same Thickness can be formed as a thin film.
  • the constant thin layer with high purity can be reproduced in its thickness by appropriate process control Apply in a controlled manner during sputtering.
  • the platinum layer in the Dimensioned so that when using the catalyst in aqueous, in particular 3% hydrogen peroxide care system for contact lenses can be used.
  • This layer can be designed so that a sufficient sterilizing effect by the Hydrogen peroxide on the contact lenses to be treated, in particular soft contact lenses, is achieved with subsequent decomposition of residual hydrogen peroxide still present in the treatment solution.
  • the catalytically active device can preferably be part of a contact lens care system be, in which the contact lens is placed in a container and in this container with the help of an aqueous care solution with 3% hydrogen peroxide content the care and sterilization of the contact lens is carried out.
  • the platinum layer is set in such a way that a sufficient exposure time of the hydrogen peroxide reached for disinfecting the contact lenses to be treated in the container and that after the disinfection treatment residual hydrogen peroxide is effectively broken down into the components of water and oxygen.
  • FIGS. 1 and 2 are applied to the contact lens care and each show a container 4, which is used as a storage or care container for contact lenses can be used.
  • the ones to be treated Contact lenses are in a hinged basket 9, such as the one from the US 5,275,784 A is known.
  • the basket 9 can be screwed onto the container 4 Cover 10 be attached.
  • FIG. 1 has a bottom part 3, which can be screwed onto the lower part of the container 4 by means of screw thread engagement 5 is.
  • the embodiment of FIG. 2 also has a screw-on Container bottom 7.
  • the container bottom or the screw-on bottom part 3 preferably made of glass.
  • the bottom part 3 forms the shaped body or the base for a catalytically active platinum layer 1, which on the Inside of the bottom part 3 is applied.
  • the surface that matches the platinum layer 1 is documented beforehand by a mechanical treatment method, in particular Blasting process in which with particle blasting, in particular sandblasting, the Surface has been treated, roughened so that a roughened surface 2 arises on the glass material of the base part 3.
  • the configuration of the roughened Surface 2 on the glass base (bottom part 3) and the platinum layer applied thereon is shown schematically in FIG. 3.
  • the platinum layer 1 which was preferably applied by sputtering Roughness on the surface and has an increased compared to the glass surface Adhesion strength due to the roughness of the surface, which is preferred by sandblasting has been generated.
  • the exemplary embodiment shown in FIG. 1 is essentially the entire floor area, i.e. H. the inner surface of the bottom part 3 roughened and coated with the catalytically active platinum layer.
  • the screw-on container bottom can 7 consist of the same plastic material as the container 4.
  • an insert 6 is provided in the form of a perforated hole 8 Glass plate.
  • the glass plate is preferably roughened on its underside according to FIG. 3 and provided with the platinum layer 1.
  • the top can also be roughened be and be provided with the platinum layer 1.
  • the platinum layer 1 is applied by sputtering.
  • the bottom the perforated glass plate of the insert 6 is by spacers 11 in one held certain distance from the container bottom 7.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
EP97927109A 1996-06-17 1997-06-03 Vorrichtung zur katalytischen zersetzung von wasserstoffperoxyd Expired - Lifetime EP0920340B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624095 1996-06-17
DE19624095A DE19624095C1 (de) 1996-06-17 1996-06-17 Vorrichtung zur katalytischen Zersetzung von Wasserstoffperoxyd
PCT/EP1997/002863 WO1997048423A1 (de) 1996-06-17 1997-06-03 Vorrichtung zur katalytischen zersetzung von wasserstoffperoxyd

Publications (2)

Publication Number Publication Date
EP0920340A1 EP0920340A1 (de) 1999-06-09
EP0920340B1 true EP0920340B1 (de) 2000-11-22

Family

ID=7797153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97927109A Expired - Lifetime EP0920340B1 (de) 1996-06-17 1997-06-03 Vorrichtung zur katalytischen zersetzung von wasserstoffperoxyd

Country Status (9)

Country Link
US (1) US6228333B1 (no)
EP (1) EP0920340B1 (no)
JP (1) JP2001506507A (no)
AT (1) ATE197674T1 (no)
AU (1) AU3171897A (no)
BR (1) BR9709817A (no)
DE (2) DE19624095C1 (no)
NO (1) NO985774L (no)
WO (1) WO1997048423A1 (no)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9701339D0 (en) * 1997-01-23 1997-03-12 Waverley Pharma Ltd Contact lens disinfection apparatus
DE19757356C1 (de) * 1997-12-22 1999-07-01 Mdle Medical Device Lab Europ Vorrichtung zur Pflege von Kontaktlinsen
DE19843140C1 (de) * 1998-09-21 1999-10-07 Mdle Medical Device Lab Europ Vorrichtung zur Pflege von Kontaktlinsen
US7998405B2 (en) 2006-07-07 2011-08-16 Donley Keith K Protecting the eyes of contact lens wearers
US7585679B1 (en) * 2008-02-22 2009-09-08 Dionex Corporation Ion chromatography system with flow-delay eluent recycle
EP2452696A4 (en) * 2009-07-10 2014-03-19 Menicon Co Ltd STERILIZATION BOX FOR CONTACT LENSES
US20110114517A1 (en) * 2009-11-17 2011-05-19 Kasey Jon Minick Hydrogen peroxide solution and kit for disinfecting contact lenses
JPWO2012001806A1 (ja) * 2010-07-01 2013-08-22 株式会社メニコン コンタクトレンズ用消毒液及びコンタクトレンズの消毒システム
JP5450355B2 (ja) * 2010-11-10 2014-03-26 株式会社メニコン コンタクトレンズ殺菌用ケース
US11090606B2 (en) 2013-12-05 2021-08-17 Dionex Corporation Gas-less electrolytic device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843746C1 (no) * 1988-12-24 1990-07-12 Degussa Ag, 6000 Frankfurt, De
US5275784A (en) * 1991-01-15 1994-01-04 Ciba Vision Corporation Method for the sterilization of contact lenses

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912451A (en) * 1973-06-04 1975-10-14 Warner Lambert Co Method for removing hydrogen peroxide from soft contact lenses
US4396583A (en) * 1981-08-14 1983-08-02 American Optical Corporation Device for single solution contact lens sterilization
GB8515079D0 (en) * 1985-06-14 1985-07-17 Kellway Pharma Contact lens cleaning & disinfection
JP2625697B2 (ja) * 1987-02-06 1997-07-02 三菱瓦斯化学株式会社 コンタクトレンズの処理方法
US5196174A (en) * 1989-06-09 1993-03-23 Ciba Vision Corporation Apparatus for sterilizing contact lenses
US5306352A (en) * 1989-12-28 1994-04-26 Ciba-Geigy Corporation Peroxide disinfection method
US5468448A (en) * 1989-12-28 1995-11-21 Ciba-Geigy Corporation Peroxide disinfection method and devices therefor
ES2020888A6 (es) * 1990-06-11 1991-10-01 Disop Sa Un procedimiento para la conversacion de lentes de contacto en un solo paso.
AU2682192A (en) * 1991-10-03 1993-05-03 Allergan, Inc. Apparatus useful in disinfecting contact lenses
US5270002A (en) * 1991-10-03 1993-12-14 Allergan, Inc. Apparatus and method useful in disinfecting contact lenses
DE4243410C2 (de) * 1992-12-17 1996-05-15 Mannesmann Ag Verfahren zur Herstellung eines Dünnfilmmeßwiderstandes
US5364601A (en) * 1992-12-30 1994-11-15 Bausch & Lomb Incorporated Treating of contact lenses with compositions comprising PVP-H202
JP2545727B2 (ja) * 1993-04-19 1996-10-23 工業技術院長 消臭灯及びその製造方法
DE19522950A1 (de) * 1995-06-23 1997-01-02 Medical Device Polymers Gmbh Katalysator zur Zersetzung von Wasserstoffperoxyd in wäßriger Lösung und seine Verwendung bei der Kontaktlinsenpflege

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843746C1 (no) * 1988-12-24 1990-07-12 Degussa Ag, 6000 Frankfurt, De
US5275784A (en) * 1991-01-15 1994-01-04 Ciba Vision Corporation Method for the sterilization of contact lenses

Also Published As

Publication number Publication date
NO985774D0 (no) 1998-12-10
EP0920340A1 (de) 1999-06-09
JP2001506507A (ja) 2001-05-22
WO1997048423A1 (de) 1997-12-24
DE19624095C1 (de) 1997-09-04
ATE197674T1 (de) 2000-12-15
AU3171897A (en) 1998-01-07
BR9709817A (pt) 2000-01-11
US6228333B1 (en) 2001-05-08
DE59702666D1 (de) 2000-12-28
NO985774L (no) 1998-12-10

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